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High-temperature air oxidation of coatings based on eutectic (β-NiAl + γ-Re) alloys and NiAl intermetallide

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Abstract

High-temperature air oxidation (up to 1100°C) of detonation coatings made of NiAl intermetallide and eutectic (β-NiAl + γ-Re) alloys is examined with x-ray diffraction and electron microscopy. A substantial difference between the air oxidation mechanisms of these coatings is revealed. The key factor that governs the air oxidation of these coatings is the ratio between rates at which aluminum and nickel oxides are formed.

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Authors and Affiliations

  1. Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev

    V. E. Oliker, M. Yu. Barabash, E. F. Grechishkin, I. I. Timofeeva & T. Ya. Gridasova

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  1. V. E. Oliker
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  2. M. Yu. Barabash
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  3. E. F. Grechishkin
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  4. I. I. Timofeeva
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  5. T. Ya. Gridasova
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__________

Translated from Poroshkovaya Metallurgiya, Vol. 46, No. 3–4 (454), pp. 86–95, 2007.

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Oliker, V.E., Barabash, M.Y., Grechishkin, E.F. et al. High-temperature air oxidation of coatings based on eutectic (β-NiAl + γ-Re) alloys and NiAl intermetallide. Powder Metall Met Ceram 46, 175–181 (2007). https://doi.org/10.1007/s11106-007-0028-2

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  • DOI: https://doi.org/10.1007/s11106-007-0028-2

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